1861: Luke Masterson, 4th Cavalry Mounted Volunteers. My great-grandfather Luke Masterson immigrated to the U.S. from County Cavan, Ireland. In 1861, he enlisted in the 4th Cavalry Mounted Volunteers of New York. As a member of this group, he fought in the Battle of Gettysburg. His brother, Patrick, was a member of the 4th Infantry of New York. Patrick died in combat due to … [Read more...] about An Irish Soldier